发明公开
EP2366533A1 Pneumatic tire with built-in sealant layer composite and method of manufacturing a layer comprising polyurethane 有权
具有用于生产聚氨酯的层的内置密封胶层复合材料和方法的充气轮胎

Pneumatic tire with built-in sealant layer composite and method of manufacturing a layer comprising polyurethane
摘要:
The present invention is directed to a pneumatic tire (10) with a built-in sealant layer. The tire (10) comprises an outer circumferential rubber tread (14), a carcass (16), and an innerliner layer (22) disposed radially inwardly from the carcass (16), wherein the tire comprises a built-in sealant layer (20, 20A, 21) comprising a polyurethane based sealant material, wherein the built-in sealant layer (20, 20A, 21) is positioned between the carcass (16) and the innerliner layer (22), and wherein the built-in sealant layer (20, 20A, 21) is a multilayered composite layer, the multilayered composite layer comprising a first polyurethane layer (21), a second polyurethane layer (21 A) and an intermediate layer (20A) positioned between the first and second polyurethane layer (21, 21A). The intermediate layer (20A) comprises at least one of:
(A) a non-woven microfiber layer containing polyurethane,
(B) particulate pigment,
(C) discrete fibers,
(D) cured rubber particles, and
(E) a woven microfiber layer containing polyurethane.

Also, a method of manufacturing a non-woven microfiber layer containing polyurethane using as intermediate layer (20A) is disclosed.
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